著者

吉村 実 ワンチャイ チャイタス ソマニイワン チャニン ベアラシリップ テラダチャイ

出版者

社団法人日本農芸化学会

雑誌

日本農芸化学会誌 (ISSN:00021407)

巻号頁・発行日

vol.69, no.3, pp.337-345, 1995-03

参考文献数

21

被引用文献数

2

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The use of L-glutamic acid mother liquor as a livestock feed additive was studied. The mother liquor was fermented from hydrolyzed cassava starch, and monosodium glutamate was removed. The mother liquor was then concentrated, which caused dissoluble L-glutamic acid to crystallize, giving a second mother liquor. This mother liquor was concentrated again, and 50% of the minerals dissolved in it were removed. The chemical properties of the remaining mother liquor and the possibility of its use as a livestock feed additive were studied. The lethal dose for 50% of test mice was 36 g/kg of body weight in the test of acute toxicity. Digestible crude protein and total digestible nutrients accounted for 16.8% and 30.4%, respectively. The addition of the mother liquor to ground cassava chips increased the protein concentration, and the most suitable ratio of mother liquor to ground cassava chips for feed intake by cattle was 1 : 3.5. This mix was used to replace 0%, 50%, 75%, or 100% of the maize in feed concentrates for fattening cattle. Feed intake, daily body weight gain, the feed conversion rate, and carcass yiled were greatest in when 50% of the maize was replaced ; protein intake was the same as when no maize was replaced, and the salt intake was low.

著者

吉村 実 川喜田 哲哉 ワンチャイ チャイタス ソマニイワン チャニン

出版者

社団法人日本農芸化学会

雑誌

日本農芸化学会誌 (ISSN:00021407)

巻号頁・発行日

vol.69, no.3, pp.347-356, 1995-03

参考文献数

15

被引用文献数

1 2

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The practicality of L-glutamic acid mother liquor for use as a livestock feed additive was studied. At water activity of 0.81, mold did not grow in the feed additive during long-term storage under either aerobic or anaerobic conditions. Results of a subacute toxicity test in rats suggested the safety of the additive. The addition of the mother liquor feed additive to feed for growing swine improved the feed intake, the daily body weight gain, and the feed conversion rate. Digestibility of crude protein, crude fat, and crude fiber was increased when the feed contained a lysine supplement and the mother liquor feed additive. The urinary nitrogen excretion of pigs given a lysine supplement in the feed with the mother liquor feed additive was less than that of pigs not given a lysine supplement with or without the mother liquor. It means that the efficiency of use of proteins in the mother liquor was improved by the addition of lysine.